Air filter /Gas Cartridge/PTFE membrane filter media 0.2micron Features and Benefits Naturally hydrophobic PTFE membrane with excellent porosity, high flow rate; Absolute rating, filtration efficiency≥99.99%, Up to 0.01 micron in gas sterile filtration; Low pressure drop and long service life; Wide chemical compatibility, resistant to strong alkali, acids, aggressive gases and solvents; High temperature endurance performance; 100% integrity tested before final assembly; Typical